Asp.net 具有DbContext的Web服务

我是一名非常新的web服务人员，在一项任务上遇到了麻烦

我有

clientscoontroller

，

LocalAdminGroupManagementController

，

valuescoontroller

，

ClientHealthContext

，

客户端

模型和

LocalAdminGroupManagement

模型

我调用这个web服务来更新数据库，我现在尝试做的另一个目的是从表中选择所有记录。在我添加

localadminggroupmanagementcontroller

和

localadminggroupmanagement

模型之前，所有模型都正常工作，现在当我调用web服务时，我得到

异常：远程服务器返回错误：（500）内部服务器错误。

我尝试阅读文档并检查其他答案，但我还是被卡住了。如有任何想法或建议，将不胜感激。

clientscoontroller

[Produces("application/json")]
[Route("Clients")]
public class ClientsController : Controller
{
    private readonly ClientHealthContext _context;

    public ClientsController(ClientHealthContext context)
    {
        _context = context;
    }

    // GET: /Clients
    [HttpGet]
    public IEnumerable<Clients> GetClients()
    {
        return _context.Clients;
    }

    // GET: /Clients/5
    [HttpGet("{id}")]
    public async Task<IActionResult> GetClients([FromRoute] string id)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        var clients = await _context.Clients.SingleOrDefaultAsync(m => m.Hostname == id);

        if (clients == null)
        {
            return NotFound();
        }

        return Ok(clients);
    }

    // POST: /Clients
    [HttpPost]
    public async Task<IActionResult> PostClients([FromBody] Clients clients)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        _context.Clients.Add(clients);
        try
        {
            await _context.SaveChangesAsync();
        }
        catch (DbUpdateException)
        {
            if (ClientsExists(clients.Hostname))
            {
                return new StatusCodeResult(StatusCodes.Status409Conflict);
            }
            else
            {
                throw;
            }
        }

        return CreatedAtAction("GetClients", new { id = clients.Hostname }, clients);
    }

    private bool ClientsExists(string id)
    {
        return _context.Clients.Any(e => e.Hostname == id);
    }

[Produces("application/json")]
    [Route("LocalAdminGroupManagement")]
    public class LocalAdminGroupManagementController : Controller
    {
        private readonly ClientHealthContext _context;

        public LocalAdminGroupManagementController(ClientHealthContext context)
        {
            _context = context;
        }

        // GET: /Clients
        [HttpGet]
        public IEnumerable<LocalAdminGroupManagement> GetLocalAdminGroupManagement()
        {
            return _context.LocalAdminGroupManagement;
        }
    }

LocalAdminGroupManagementController

[Produces("application/json")]
[Route("Clients")]
public class ClientsController : Controller
{
    private readonly ClientHealthContext _context;

    public ClientsController(ClientHealthContext context)
    {
        _context = context;
    }

    // GET: /Clients
    [HttpGet]
    public IEnumerable<Clients> GetClients()
    {
        return _context.Clients;
    }

    // GET: /Clients/5
    [HttpGet("{id}")]
    public async Task<IActionResult> GetClients([FromRoute] string id)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        var clients = await _context.Clients.SingleOrDefaultAsync(m => m.Hostname == id);

        if (clients == null)
        {
            return NotFound();
        }

        return Ok(clients);
    }

    // POST: /Clients
    [HttpPost]
    public async Task<IActionResult> PostClients([FromBody] Clients clients)
    {
        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        _context.Clients.Add(clients);
        try
        {
            await _context.SaveChangesAsync();
        }
        catch (DbUpdateException)
        {
            if (ClientsExists(clients.Hostname))
            {
                return new StatusCodeResult(StatusCodes.Status409Conflict);
            }
            else
            {
                throw;
            }
        }

        return CreatedAtAction("GetClients", new { id = clients.Hostname }, clients);
    }

    private bool ClientsExists(string id)
    {
        return _context.Clients.Any(e => e.Hostname == id);
    }

[Produces("application/json")]
    [Route("LocalAdminGroupManagement")]
    public class LocalAdminGroupManagementController : Controller
    {
        private readonly ClientHealthContext _context;

        public LocalAdminGroupManagementController(ClientHealthContext context)
        {
            _context = context;
        }

        // GET: /Clients
        [HttpGet]
        public IEnumerable<LocalAdminGroupManagement> GetLocalAdminGroupManagement()
        {
            return _context.LocalAdminGroupManagement;
        }
    }

---

500表示服务器引发了未捕获的异常。在开发机器上，您会看到一个屏幕，显示异常的详细信息。将异常处理和日志记录添加到代码中以记录异常。调试您的代码以查看它抛出的位置以及原因